Here’s our roundup of the week’s tech business news. First, the most popular stories we published in the last seven days:

The most anticipated games of E3 — Game fans are waiting for the E3 Expo next week to get a glimpse of the biggest games coming out later this year and next year. VentureBeat writer Dean Takahashi lists his 20 most anticipated games of the show.

Investing in Russia? Better hire bodyguards and hunker down — Could Russia potentially be the home of the next massive tech boom? Our answer: No way.

Pepsi hides video in barcodes on soda cans — The giant beverage-and-snacks concern announced this week a new experiment around barcodes, in collaboration with a startup called Stickybits.

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iPhone now as fragmented as Android — Transpond’s Peter Yared writes that when his company built applications for iPhone and Android last year, his engineers loved the iPhone and were annoyed with Android. That all changed in the beginning of 2010.

How Apple is setting itself apart from the pack of iPhone clones — Steve Jobs showed this week why Apple is innovative enough to stay ahead of the pack of companies that want to clone the magic of the iPhone. With the iPhone 4, Apple is going to have a headstart on its rivals again.

And here are five more stories we think are important, thought-provoking or fun:

Four years on, Twitter still struggles with downtime, admits mistakes — Twitter said its engineers made a few mistakes in managing the service’s internal networks, creating a resurgence of “fail whales” this week. And it says its efforts to fix those mistakes may not be enough to keep the service running reliably during the biggest World Cup matches.

PG&E loses $46M Prop 16 battle in California: A win for grid innovation — Despite a massive $46 million campaign, Proposition 16 — the California ballot measure backed by utility Pacific Gas & Electric — failed in Tuesday’s election, with 52.5 percent of voters saying no to the company’s attempt to block local governments from creating or growing their own municipal utilities.

Glam Media launches an ad network for quality content — Samir Arora passionately believes that quality writing, photography and video will win against hastily slapped-together Web content designed to appease Google’s ranking algorithms. That’s why Glam Media, his vertical media company for women online, has spent more than 18 months developing its own display ad platform, which Arora officially launched this week.

With new fund on hold, Elevation Partners loses a rock star (not Bono!) — Is Elevation Partners’ headcount heading down? According to an email she sent to contacts, Patty Halfen Wexler, a principal at Elevation, is leaving the high-profile Silicon Valley private-equity firm at the end of the month.

Second Life maker Linden Lab cutting 30 percent of staff — The big workforce reduction seems to undercut all the good news that the San Francisco company has been trumpeting.